3M understands the risks and consequences of working in high noise environments, which is why they've developed a product that takes hearing conservation to a whole new level. The new 3M Peltor Earmuffs X series features a modern, attractive low-profile design with some of the best hearing protection in the industry. Lightweight, with new ear cushion foam technology for effective acoustic seal and reliable protection; in addition the cushions and inserts are replacable to keep them clean. The X1 has an NRR of 22dB (with hardhat 21 dB) and standard attenuation.